FZPN02 KWBC 171725
HSFEPI 1745
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC SAT AUG 17 2024
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS
SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT…WHICH IS THE AVERAGE
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
[email protected](LOWERCASE).
FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).
SECURITE
PACIFIC N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT
TO 50N 160E
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 1200 UTC AUG 17.
24 HOUR FORECAST VALID 1200 UTC AUG 18.
48 HOUR FORECAST VALID 1200 UTC AUG 19.
.WARNINGS.
…TROPICAL STORM WARNING…
.24 HOUR FORECAST TROPICAL STORM AMPIL NEAR 41.0N 156.9E.
MAXIMUM SUSTAINED WIND 50 KT GUSTS 65 KT. TROPICAL STORM FORCE
WINDS WITHIN 170 NM NE…200 NM SE…180 NM SW AND 120 NM NW
QUADRANTS. SEAS 12 FT OR GREATER WITHIN 170 NM NE…200 NM
SE…180 NM SW…AND 120 NM NW QUADRANTS WITH SEAS TO 36 FT.
ELSEWHERE WITHIN 420 NM E SEMICIRCLE WINDS 20 TO 33 KT. SEAS TO
12 FT.
.48 HOUR FORECAST POST-TROPICAL AMPIL NEAR 45N169E 975 MB. FROM
453N TO 47N BETWEEN 168E AND 173E WINDS 40 TO 55 KT. SEAS 20 TO
32 FT. ELSEWHERE WITHIN 300 NM E SEMICIRCLE…360 NM SW AND 240
NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 21 FT.
…STORM WARNING…
.COMPLEX LOW WITH MAIN CENTER 57N180W 974 MB MOVING NE 15 KT.
FRONT EXTENDS FROM 60N173W TO 54N169W TO 43N176W. WITHIN 180 NM
NW SEMICIRCLE WINDS 35 TO 50 KT. SEAS 14 TO 21 FT. ELSEWHERE
WITHIN 600 NM NE…300 NM SE…480 NM SW AND 360 NM NW
QUADRANTS…AND WITHIN 360 NM E OF FRONT WINDS 25 TO 40 KT. SEAS
9 TO 17 FT. ALSO N OF 46N BETWEEN 167E AND 173W WINDS 20 TO 30
KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 58N170W 982 MB. FROM 52N TO 61N BETWEEN
163W AND 180W WINDS 30 TO 45 KT. SEAS 10 TO 18 FT. ELSEWHERE
WITHIN 240 NM E OF A FRONT FROM 58N158W TO 50N164W TO 40N174W
WINDS 20 TO 30 KT. SEAS 9 TO 15 FT.
.48 HOUR FORECAST LOW INLAND. N OF A LINE FROM 60N170W TO
55N150W TO 56N146W WINDS 20 TO 30 KT. SEAS TO 11 FT.
…GALE WARNING…
.LOW 39N172E 1006 MB MOVING E 15 KT
